Methylation is basically your body adding a small chemical group (one carbon + three hydrogens = a “methyl group”) to another molecule. Sounds tiny. But that little shift can completely change how your body functions.

You’ve probably heard people talk about estrogen like it’s either the hero or the villain when it comes to women’s health, especially breast cancer. The truth is, this area of women’s health is full of complexity, outdated research, and evolving science. But it’s also important. Because the way your body breaks down estrogen—your estrogen metabolism—can influence everything from mood and energy to long-term risks like breast cancer.